$OpenBSD: patch-include_GL_freeglut_ext_h,v 1.2 2012/09/11 10:07:07 sthen Exp $
--- include/GL/freeglut_ext.h.orig	Sun Sep  4 21:38:32 2011
+++ include/GL/freeglut_ext.h	Thu Aug 30 07:10:04 2012
@@ -170,7 +170,7 @@ FGAPI void    FGAPIENTRY glutSolidCylinder( GLdouble r
 /*
  * Extension functions, see freeglut_ext.c
  */
-typedef void (*GLUTproc)();
+typedef void (*GLUTproc)(void);
 FGAPI GLUTproc FGAPIENTRY glutGetProcAddress( const char *procName );
 
 /*
